Improvement in shutter-fasteners



IWA WILLIAMS &c.

.WlLLIAMS Improvement in Shutter-Fasteners.

Patented May1 4, 18 72;

\V em uw s 3 N) mew @s WARREN W. WILLIAMS, OF WORCESTER, AND CHARLES E.WILLIAMS, OF

CLINTON, MASSACHUSETTS.

IMPROVEMENT lN SHUTTER-FASTENERS.

Specification forming part of Letters Patent No. 126,858, dated May 14,1872.

in Fastenings for WindoW-Blinds and Shutters; and do hereby declare thefollowing to be a full, clear, and exact description thereof, referencebeing had to the accompanying drawing and to the letters of referencemarked thereon.

The nature of our invention consists in a longitudinally-bisectedscrew-shell provided with an interior spring-bolt, which is stopped andguided in its motion by the screw, which fastens the two halves of theshell together, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which our inventionappertains to make and. use the same, we will now proceed to describeits construction and operation, referring to the annexed drawing whichforms a part of this specification, and in which- Figure 1 is a sideview of our blind-fastening. Fig. 2 is a front view of the same. Fig. 3is a section taken through the line A B, Fig. 2. Fig. 4 is a side viewof the catch used on the side of the building.

A represents the lower rail of a windowblind, into which our fastener isinserted from the lower edge. I) is the outside shell or cylinder of theblind-fastener, provided with exterior screw-threads to be screwed intothe rail a. This shell is bisected longitudinally into two equal parts,each half having an oval end, 0, which rests on a staple, e, in thewindow-sill when the blind is closed, and upon the catch f when itisopen, thus supporting the blind in either case, and preventing itssagging. fastened together, before inserting in the rail to, by a screw,j, which screw passes through a 1011- gitudinal slot, as, in a bolt, d,placed within the shell. Above this bolt, inside of the shell, is aspiral spring, i, which presses down upon the bolt so as to force andhold the same on the catches. In the lower edge of the bolt 01 aretwonotches to engage with the catches and hold the blind positively whenopen or shut, and the bolt has also at this end thumbpieces whichproject a trifle beyond the outside of the rail to, so that the bolt canbe raised at will. The screw j, passing through the slot 90 in the bolt,acts as .a stop to the mo tion of the bolt, preventing it from fallingout when the blind is open, or being pushed too far up. This screw alsoacts as a guide for the bolt, in that it prevents the bolt from turning,insuring it always being in the proper position to engage with thecatches. These catches may be of any suitable construction, and attachedin any desired manner. The catch f, shown in Fig. 4, is the one weprefer to use on the side of the building.

Having thus fully described our invention,

what we claim as new, and desire to secure by Letters Patent, is-

The bisected screw-sleeve or shell I), held together by a screw, j, andprovided with an interior spring-bolt, d, said screw j passing through aslot, at, in the bolt, and acting as a stop and guide for the same, allsubstantially as and for the purposes herein set forth.

WARREN HWILLIAMS. CHARLES E. WILLIAMS.

Witnesses:

O. T. WEBB, HARRISON BLrss.

AENT DFFICE.

The two halves of the shell 11 are

